GM Pulleys - Can you I.D?

framer · Jan 20, 2004

I have a water pump pulley and a crank pulley that I removed from my '67 SS.
I thought they might have been the original smog pulley but a reliable source has confirmed they they are not.

I even tried contacting GM Canada but they were unable to identify these GM part numbers.

I wondering if anyone can help I.D these pulley's:

Water Pump - 3900434AB
Crank - 3874418BS

These numbers are clearly stamped on each item. Both are double row pulley's

Thanks,

Mike72ss · Jan 20, 2004

Chuck my parts book shows:
Water Pump - 3900434 64-65 All 8 Cyl
66 All with 325 and 360HP
396 eng. with 62 Amp
Delcotron.
68 All 6 cyl w/power
steering

Crank - 3874418 66 All with 325 and 350HP
396 eng. with 62 Amp
Delcotron.
68 All ST US jobs with 396
325 and 350 HP engine

Mike

framer · Jan 20, 2004

Thanks Mike!

It was just that easy.... not really sure why GM Canada couldn't I.D them. Maybe it was just a lazy parts guy at the dealer who never bothered to check

Thanks Again!

GM Pulleys - Can you I.D?

framer

Mike72ss

framer

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